Mobile Communication Coverage Distribution System in Corridor and Coupled Radiation Unit

Abstract

A mobile communication coverage distribution system in corridor is used for mobile communication signal coverage in corridor environment. The system includes a radio frequency (RF) cable arranged along longitudinal direction of the corridor and intended for signal transmission and having a plurality of spaced access nodes; a signal source for transmitting signal to from the RF cable or receiving signal to from the RF cable; a number of coupled radiation units corresponding to each access node and used to realize signal coverage in a limited range near the access node, said signal being transmitted across the RF cable. The mobile communication coverage distribution system in corridor according to the invention has simple structure, low cost, is convenient in construction and has reliable performance.

1 . A mobile communication coverage distribution system in corridor for mobile communication signal coverage in corridor environment, comprising:
 a radio frequency cable arranged along a longitudinal direction of the corridor and intended for signal transmission and having a plurality of spaced access nodes;   a signal source for transmitting signal to the radio frequency cable or receiving signal from the radio frequency cable;   a number of coupled radiation units corresponding to each access node and used to realize signal coverage in a limited range near the access node, said signal being transmitted across the radio frequency cable.   
     
     
         2 . The mobile communication coverage distribution system in corridor according to  claim 1 , wherein the coupled radiation unit comprises:
 a bidirectional radiation antenna for realizing bidirectional signal coverage in space and insensitive to reflection of walls; and   a directional coupler for signal coupling between the bidirectional radiation antenna and radio frequency cable;   the bidirectional radiation antenna and directional coupler are integrated onto a metal base plate.   
     
     
         3 . The mobile communication coverage distribution system in corridor according to  claim 2 , wherein the coupled radiation unit further comprises a double frequency multiplexer for multiplexing signals of two frequency bands; the bidirectional radiation antenna includes two radiation elements of different frequency bands; when signals are uplinked, signals from space are received by two radiation elements of the bidirectional radiation antenna, and then are coupled by the coupler, and next, the signals are multiplexed by the multiplexer and finally are transmitted to the radio frequency cable; when signals are down-linked, the signals from the radio frequency cable are split by the multiplexer and then are coupled to the two radiation elements of the bidirectional antenna and finally, they are transmitted to space through the two radiation elements. 
     
     
         4 . The mobile communication coverage distribution system in corridor according to  claim 3 , wherein the coupler is formed on the metal base plate; one side of the coupler is provided with the double frequency multiplexer formed on the metal base plate, while the other side thereof is provided with an erected dielectric substrate; and the bidirectional radiation antenna is printed on the dielectric substrate. 
     
     
         5 . The mobile communication coverage distribution system in corridor according to  claim 1 , wherein the coupled radiation unit has a suspension member suspended on a peripheral wall of the corridor. 
     
     
         6 . The mobile communication coverage distribution system in corridor according to  claim 1 , wherein the plurality of access nodes is distributed equidistantly. 
     
     
         7 . The mobile communication coverage distribution system in corridor according to  claim 1 , wherein the signal source is any one of a repeater, macro base station, micro base station and radio remote unit. 
     
     
         8 . The mobile communication coverage distribution system in corridor according to  claim 3 , wherein the two frequency bands range from about 790-960 MHz and 1710-2700 MHz respectively. 
     
     
         9 . The mobile communication coverage distribution system in corridor according to  claim 1 , wherein the number of the signal sources is two and the two signal sources are arranged on two ends of the radio frequency cable respectively for bidirectional transmission of signals. 
     
     
         10 . A coupled radiation unit, comprising:
 a bidirectional radiation antenna for realizing bidirectional signal coverage in space and insensitive to reflection of walls; and   a directional coupler for signal coupling between the bidirectional radiation antenna and radio frequency cable;   the bidirectional radiation antenna and directional coupler are integrated onto a metal base plate.   
     
     
         11 . The mobile communication coverage distribution system in corridor according to  claim 2 , wherein the coupled radiation unit has a suspension member suspended on a peripheral wall of the corridor. 
     
     
         12 . The mobile communication coverage distribution system in corridor according to  claim 2 , wherein the plurality of access nodes is distributed equidistantly. 
     
     
         13 . The mobile communication coverage distribution system in corridor according to  claim 2 , wherein the signal source is any one of a repeater, macro base station, micro base station and radio remote unit. 
     
     
         14 . The mobile communication coverage distribution system in corridor according to  claim 2 , wherein the number of the signal sources is two and the two signal sources are arranged on two ends of the radio frequency cable respectively for bidirectional transmission of signals. 
     
     
         15 . The mobile communication coverage distribution system in corridor according to  claim 3 , wherein the coupled radiation unit has a suspension member suspended on a peripheral wall of the corridor. 
     
     
         16 . The mobile communication coverage distribution system in corridor according to  claim 3 , wherein the plurality of access nodes is distributed equidistantly. 
     
     
         17 . The mobile communication coverage distribution system in corridor according to  claim 3 , wherein the signal source is any one of a repeater, macro base station, micro base station and radio remote unit. 
     
     
         18 . The mobile communication coverage distribution system in corridor according to  claim 3 , wherein the number of the signal sources is two and the two signal sources are arranged on two ends of the radio frequency cable respectively for bidirectional transmission of signals. 
     
     
         19 . The mobile communication coverage distribution system in corridor according to  claim 4 , wherein the coupled radiation unit has a suspension member suspended on a peripheral wall of the corridor. 
     
     
         20 . The mobile communication coverage distribution system in corridor according to  claim 4 , wherein the plurality of access nodes is distributed equidistantly.